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Commit f104acdc authored by Aravind Venkateswaran's avatar Aravind Venkateswaran
Browse files

msm: mdss: dsi: fix dsi init sequence with ulps during suspend feature 



If continuous splash screen feature is disabled and ULPS during suspend
feature is enabled, DSI phy initialization does when device is booting
up, due to incorrect checks in the current implementation. Fix this issue
by ensuring that DSI phy initialization is always done when DSI interface
is turned on.

Signed-off-by: default avatarAravind Venkateswaran <aravindh@codeaurora.org>
Change-Id: Icdc90eef8d5f3380b47f67268249eb670f8ca824
parent c84f1f0f

drivers/video/msm/mdss/mdss_dsi.c

+9 −1
Original line number Diff line number Diff line
@@ -740,7 +740,15 @@ int mdss_dsi_on(struct mdss_panel_data *pdata) 
	 * clocks.

	 */

	mdss_dsi_clk_ctrl(ctrl_pdata, DSI_BUS_CLKS, 1);

	if (!pdata->panel_info.ulps_suspend_enabled) {



	/*

	 * If ULPS during suspend feature is enabled, then DSI PHY was

	 * left on during suspend. In this case, we do not need to reset/init

	 * PHY. This would have already been done when the BUS clocks are

	 * turned on. However, if cont splash is disabled, the first time DSI

	 * is powered on, phy init needs to be done unconditionally.

	 */

	if (!pdata->panel_info.ulps_suspend_enabled || !ctrl_pdata->ulps) {

		mdss_dsi_phy_sw_reset(ctrl_pdata);

		mdss_dsi_phy_init(ctrl_pdata);

		mdss_dsi_ctrl_setup(ctrl_pdata);